This is a street rod built by Brooks Stevens and his son at the original Excalibur factory in Wisconsin.
Frame was a then-new Studebaker frame, with a modified prewar Oldsmobile sedan body. The current engine is a first-series Chevrolet big block LS-6, which must have been installed after the 1965-66 build date.
EDIT:The headlights are listed as being Marchant.